A persons total lung capacity does not change with exercise

A person\'s total lung capacity does not change with exercise. In terms of the inspiratory reserve volume (IRV), tidal volume (TV), expiratory reserve volume (ERV), and residual volume (RV), how would these volumes change with exercise?

Solution

TIDAL VOLUME(TV): the volume of air inhaled and exhaled during normal breathing without any effort is called as tidal volume. AT rest the normal tidal volume in men is 500 ml and in women is 400 ml approximately. with exercise the TV increases in order to satisfy the increased need for gas exchange.

INSPIRATORY RESERVE VOLUME(IRV): The IRV is the additional volume of air that can be inhale with applying maximum effort above the volume inspired tidally . the normal IRV in men is 3100 ml and in women is 2400 ml approximately. With exercise IRV decreases.

EXPIRATORY RESERVE VOLUME(ERV): the ERV is the additional volume of air exhaled forcibly beyond a normal tidal volume. the normal ERV in men is 1200 ml and in women is 900 ml approximately. it decreases with exercise.

RESIDUAL VOLUME(RV): THE volume of air that remains in the lungs even after maximum exhalation and can only be forced out by the lungs by collapsing the lungs.the normal RV in men is 1200 ml and in women is 900 ml approximately. it will stay the same and will have no change with or without exercise.